1.
Geraea canescens
Torrey & A. Gray, Proc. Amer. Acad. Arts. 1: 49. 1847.
Hairy desert-sunflower, desert-gold
Geraea canescens
var.
paniculata
(A. Gray) S. F. Blake
Annuals,
10—80 cm; herbage bristly and/or soft-hairy.
Leaves
petiolate (proximal) or sessile; blades green or gray, lanceolate or ovate to elliptic or oblanceolate, 1—10 cm, bases tapering to wings, margins entire or dentate, apices acute, faces ± canescent.
Heads
borne singly or in paniculiform arrays.
Involucres
7—12 mm.
Phyllaries
green, narrowly lanceolate to linear (margins shaggy-ciliate), apices acute.
Ray florets
10—21; laminae 1—2 cm.
Disc corollas
4—5 mm.
Cypselae
6—7 mm;
pappi
3—4 mm.
2
n
= 36.
Flowering Oct—May. Sandy desert soils; 0—1300 m; Ariz., Calif., Nev., Utah; Mexico (Baja California, Sonora).
